SaneSecurity provide third party ClamAV signatures. Recently they stop being distributed as they could not keep up with the bandwidth requirements of people downloading them. When we were running them they were stopping ~95% of all our SPAM which equated to about 80k per day of our email stream. I am so so pleased they are coming back !

Back online - props to Steve for all his hard work in the war on spam!

2009.01.20 News:

It's been a while... but the Sanesecurity signatures have returned!

We disappeared for a while due a DDos, a small number of users who overloaded the shared hosting servers by downloading the signatures every second and in reality, an unscalable download system.

The old download system doesn't work any more and won't be coming back, so if you haven't done already, please disable your cron jobs and wget/curls downloads, as a new round-robin rsync based download url is available.